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from abc import abstractmethod
from typing import Type

from plc4py.spi.transport.Plc4xBaseTransport import Plc4xBaseTransport


class PlcTransportLoader:
    """Hook spec for PLC4PY Transport Loaders"""

    @staticmethod
    @abstractmethod
    def get_transport() -> Type[Plc4xBaseTransport]:
        """Returns the PlcConnection class that is used to instantiate the transport"""
        pass

    @staticmethod
    @abstractmethod
    def key() -> str:
        """Unique key to identify the transport"""
        pass
